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    王友年

    • 教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:大连工学院
    • 学位:硕士
    • 所在单位:物理学院
    • 学科:等离子体物理
    • 办公地点:大连理工大学物理系楼306
    • 联系方式:0411-84707307
    • 电子邮箱:ynwang@dlut.edu.cn

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    Interactions of a charged particle with parallel two-dimensional quantum electron gases

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    论文类型:期刊论文

    发表时间:2008-08-01

    发表刊物:CHINESE PHYSICS LETTERS

    收录刊物:SCIE、ISTIC、Scopus

    卷号:25

    期号:8

    页面范围:2981-2984

    ISSN号:0256-307X

    摘要:By using the linearized quantum hydrodynamic (QHD) theory, electronic excitations induced by a charged particle moving between or over two parallel two-dimensional quantum electron gases (2DQEG) are investigated. The calculation shows that the influence of the quantum effects on the interaction process should be taken into account. Including the quantum statistical and quantum diffraction effects, the general expressions of the induced potential and the stopping power are obtained. Our simulation results indicate that a V-shaped oscillatory wake potential exists in the electron gases during the test charge intrusion. Meanwhile, double peaks will occur in the stopping power when the distance of two surfaces is smaller and the test charge gets closer to any one of the two sheets.